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Erase Gate Generation at Disk Drive

IP.com Disclosure Number: IPCOM000044921D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06

Publishing Venue

IBM

Related People

Authors:
Hearld, RF Jennings, WC Quinlan, WP [+details]

Abstract

In a disk drive, it is desirable to erase the side edges of a record as the data record is written. This is referred to as tunnel erase. The tunnel-erase operation requires a delay between the gating of the signal to the write coils and the gating of the signal to the erase coils. This is due to the fact that the write and erase gaps are physically separated on the magnetic head. The logic shown in Fig. 3 permits the erase gate signal that controls the driving of the erase gaps to be generated at the disk drive.